Cassandra

Production issue: when we are trying to write a select query with 8 lacks ids “in condition “. then we got faced below issue, To solve the above exception, we used distributed calls in Java client as shown below, [crayon-5bf3480c9a967878403854/] Few Production configurations in cassandra RetryPolicy Three scenarios you can control […]

Storage engine Cassandra uses a storage structure similar to a Log-Structured Merge Tree, unlike a typical relational database that uses a B-Tree. Cassandra avoids reading before writing. Read-before-write, especially in a large distributed system, can produce stall in read performance and other problems. Cassandra never re-writes or re-reads existing data, […]

Cassandra is designed in such a way that, there will not be any single point of failure. There is no master- slave architecture in cassandra. cassandra addresses the problem of SPOF by employing a peer-to-peer distributed system across homogeneous nodes where data is distributed among all nodes in the cluster. In cassandra all […]

What is CAP Theorem? CAP describes that before choosing any Database (Including distributed database), Basing on your requirement we have to choose only two properties out of three. Consistency – Whenever you read a record (or data), consistency guaranties that it will give same data how many times you read. […]

Cassandra Cassandra is a distributed database from Apache that is highly scalable and designed to manage very large amounts of structured data. It provides high availability with no single point of failure. NoSQL The primary objective of a NoSQL database is to have simplicity of design, horizontal scaling, and finer […]

Cassandra Overview Cassandra is another no-sql database. Similar to Hbase it is also distributed column-oriented database to handle big data workloads across multiple nodes but it can support both Local File system and HDFS, whereas in Hbase the underlying file system is also HDFS. It overcomes single point of failure […]